WO2014171615A1 - 태양전지 모듈 및 이의 제조방법 - Google Patents
태양전지 모듈 및 이의 제조방법 Download PDFInfo
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- WO2014171615A1 WO2014171615A1 PCT/KR2013/012267 KR2013012267W WO2014171615A1 WO 2014171615 A1 WO2014171615 A1 WO 2014171615A1 KR 2013012267 W KR2013012267 W KR 2013012267W WO 2014171615 A1 WO2014171615 A1 WO 2014171615A1
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- Prior art keywords
- electrode
- solar cell
- cell module
- photoactive layer
- transport layer
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Images
Classifications
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- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/20—Light-sensitive devices
- H01G9/2068—Panels or arrays of photoelectrochemical cells, e.g. photovoltaic modules based on photoelectrochemical cells
- H01G9/2081—Serial interconnection of cells
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- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
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- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
- H01L31/0508—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module the interconnection means having a particular shape
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- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
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- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/0445—PV modules or arrays of single PV cells including thin film solar cells, e.g. single thin film a-Si, CIS or CdTe solar cells
- H01L31/046—PV modules composed of a plurality of thin film solar cells deposited on the same substrate
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- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/0445—PV modules or arrays of single PV cells including thin film solar cells, e.g. single thin film a-Si, CIS or CdTe solar cells
- H01L31/046—PV modules composed of a plurality of thin film solar cells deposited on the same substrate
- H01L31/0465—PV modules composed of a plurality of thin film solar cells deposited on the same substrate comprising particular structures for the electrical interconnection of adjacent PV cells in the module
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- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/06—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices characterised by potential barriers
- H01L31/072—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices characterised by potential barriers the potential barriers being only of the PN heterojunction type
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- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/20—Light-sensitive devices
- H01G9/2027—Light-sensitive devices comprising an oxide semiconductor electrode
- H01G9/2031—Light-sensitive devices comprising an oxide semiconductor electrode comprising titanium oxide, e.g. TiO2
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/20—Light-sensitive devices
- H01G9/2059—Light-sensitive devices comprising an organic dye as the active light absorbing material, e.g. adsorbed on an electrode or dissolved in solution
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a solar cell module and a method of manufacturing the same, and more particularly, to improve the structure and performance of the connection between the individual solar cells by forming a conductive channel between the opposite electrode between the individual solar cells constituting the solar cell module It relates to a solar cell module and a method of manufacturing the same.
- the most widely used conventional organic solar cell module includes a patterned first electrode, a patterned first charge transport layer (hole transport layer or electron transport layer), a patterned active layer, and a patterned second charge on a substrate.
- the transport layer (electron transport layer or hole transport layer) and the patterned second electrode are sequentially stacked.
- each layer in order to connect the opposite electrodes of each solar cell continuously, each layer must be shifted slightly to form a thin film. At this time, if the opposite electrode of each solar cell has a contact with each other does not operate as a module.
- the existing organic solar cell module must pattern not only the first electrode and the second electrode but also the first charge transport layer, the photoactive layer and the second charge transport layer, which are the first electrode and the second electrode of the first organic solar cell. This means that the second electrode of the organic solar cell directly contacts without disturbing another layer.
- the thin film in the fabrication of such an existing module, the thin film must be patterned while gradually shifting each layer slightly. Therefore, a high level pattern technology for alignment of the thin film is required in the fabrication of the pattern thin film. This makes it difficult to increase the price of the organic solar cell module.
- an active area which is a portion where the first electrode and the second electrode of each solar cell overlap, is reduced, and at the same time, the electrode The non-overlapping portion of the inactive area is increased.
- the problem to be solved by the present invention is to provide a solar cell module that does not require a high pattern technology for the alignment of the thin film (Align).
- Another object of the present invention is to provide a solar cell module with improved module efficiency by increasing the active area of each solar cell.
- Another object of the present invention is to provide a method of manufacturing such a solar cell module.
- Such a solar cell module may include a plurality of solar cells including a substrate and a photoactive layer disposed on the substrate and positioned between the first electrode, the second electrode, and the first electrode and the second electrode. .
- at least a part of the second electrode may be positioned on the photoactive layer of the neighboring solar cell, and a conductive channel may be located between the second electrode and the first electrode of the neighboring solar cell.
- This conductive channel may be located in a layer between the second electrode and the first electrode of the neighboring solar cell.
- nanostructures may be further included in the photoactive layer to induce efficient formation of conductive channels.
- Another aspect of the present invention to achieve the above object provides a solar cell module manufacturing method.
- the solar cell module manufacturing method includes the steps of forming a plurality of first electrodes spaced apart on a substrate, forming a photoactive layer on the entire surface of the substrate on which the first electrode is formed, and a plurality of spaced apart on the photoactive layer. Forming a plurality of solar cells by forming a second electrode, wherein at least a portion of the second electrode is positioned on the photoactive layer of the neighboring solar cell; and the solar cell neighboring the second electrode. And applying an electric field to the first electrode of the to form a conductive channel.
- unlike the conventional solar cell module can provide a solar cell module having a structure that forms a thin film on the entire surface except the electrode.
- FIG. 1 is a cross-sectional view showing a solar cell module according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view showing a solar cell module according to another embodiment of the present invention.
- 3 to 5 are cross-sectional views illustrating a method of manufacturing a solar cell module according to an embodiment of the present invention, according to process steps.
- first, second, etc. may be used to describe various elements, components, regions, layers, and / or regions, such elements, components, regions, layers, and / or regions It will be understood that it should not be limited by these terms.
- FIG. 1 is a cross-sectional view showing a solar cell module according to an embodiment of the present invention.
- the solar cell module is positioned on the substrate 100 and the substrate 100, and includes the first electrode 200, the second electrode 600, and the first electrode 200 and the second electrode ( It includes a plurality of solar cells including a photoactive layer 400 positioned between 600.
- the second electrode 600 is positioned on the photoactive layer 400 of the neighboring solar cell, and is conductive between the second electrode 600 and the first electrode 200 of the neighboring solar cell. Characterized in that the channel 700 is located.
- each solar cell is classified based on the region of the first electrode.
- a portion where the first electrode and the second electrode of each solar cell overlap with each other is defined as an active area, and a portion where the second electrode of the solar cell adjacent to the first electrode of the solar cell overlaps. Defined as a connective area.
- an entire area of the solar cell module is defined as an inactive area except for an active area of each solar cell.
- the first charge transport layer 300 may be further included between the first electrode 200 and the photoactive layer 400.
- the second charge transport layer 500 may be further included between the photoactive layer 400 and the second electrode 600.
- the first charge transport layer 300 or the second charge transport layer 500 may be omitted.
- the substrate 100 may be a transparent inorganic substrate selected from glass, quartz, Al 2 O 3 or SiC, or polyethylene terephthlate (PET), polyethersulfone (PES), polystyrene (PS), polycarbonate (PC), polyimide (PI), It may be a transparent organic substrate selected from polyethylene naphthalate (PEN) or polyarylate (PAR).
- PET polyethylene terephthlate
- PES polyethersulfone
- PS polystyrene
- PC polycarbonate
- PI polyimide
- PEN polyethylene naphthalate
- PAR polyarylate
- the plurality of first electrodes 200 are positioned on the substrate 100. In this case, the plurality of first electrodes 200 may be spaced apart from each other on the substrate 100.
- the first electrode 200 may serve as a cathode or an anode according to the type of the charge transport layer 300 disposed on the first electrode 200.
- the first electrode 200 serves as an anode for collecting holes generated in the photoactive layer 400. Can be done.
- the first electrode 200 may serve as a cathode for collecting electrons generated in the photoactive layer 400. Can be.
- the first electrode 200 is preferably a material having transparency to transmit light.
- the first electrode 200 may be formed of a carbon allotrope such as carbon nanotube (CNT), graphene, transparent conductive oxide (TCO) such as ITO, doped ZnO, MgO, or the like.
- CNT carbon nanotube
- TCO transparent conductive oxide
- conductive polymer materials such as polyacetylene, polyaniline, polythiophene, polypyrrole, and the like may be used, and metal grid wiring printed by deposition or ink to improve the conductivity of these materials may be used. Can be added.
- the first charge transport layer 300 is located on the first electrode 200.
- the first charge transport layer 300 may be entirely located on the substrate 100 on which the plurality of first electrodes 200 are located. That is, the first charge transport layer 300 does not require a pattern process for series connection between each solar cell as in the prior art.
- the first charge transport layer 300 captures electrons or holes separated from the photoactive layer 400 and transports the electrons or holes to the first electrode 200.
- the first charge transport layer 300 may be a hole transport layer or an electron transport layer.
- such a hole transport layer may be PEDOT: PSS (poly (3,4-ethylenedioxythiophene): poly (styrenesulfonate)), polythioophenylenevinylene , Polyvinylcarbazole, polyparaphenylenevinylene, and derivatives thereof.
- PSS poly (3,4-ethylenedioxythiophene): poly (styrenesulfonate)
- polythioophenylenevinylene polyvinylcarbazole
- polyparaphenylenevinylene polyparaphenylenevinylene
- the present invention is not limited thereto, and various types of organic materials that may increase the work function of the first electrode 200 in contact with the hole transport layer may be used.
- molybdenum oxide, vanadium oxide, tungsten oxide, or the like, which is a metal oxide semiconductor doped with p-type may be used.
- the electron transport layer may be a fullerene (C60, C70, C80) or a fullerene derivative PCBM ([6,6] -phenyl-C61 butyric acid methyl ester) (PCBM (C60)). , PCBM (C70), PCBM (C80)).
- PCBM C60
- PCBM PCBM
- PCBM PCBM
- PCBM PCBM
- C80 PCBM
- the present invention is not limited thereto, and various types of organic materials capable of reducing the work function of the first electrode 200 in contact with the electron transport layer may be used.
- titanium oxide (TiO x ) or zinc oxide (ZnO), which is a metal oxide semiconductor doped with n-type may be used.
- the photoactive layer 400 is located on the first charge transport layer 300.
- the photoactive layer 400 may be entirely located on the first charge transport layer 300. That is, the photoactive layer 400 of the present invention does not require a pattern process for series connection between each solar cell, unlike the prior art.
- the photoactive layer 400 when the first charge transport layer 300 is omitted, the photoactive layer 400 will be located entirely on the substrate 100 on which the plurality of first electrodes 200 are located.
- the photoactive layer 400 absorbs light irradiated to the solar cell and forms an electron hole pair, that is, an exciton, in an excited state.
- the photoactive layer 400 may have a bulk hetero junctuin structure or a bilayer structure of an electron donor material and an electron acceptor material.
- the electron donor material may include an organic material that absorbs light.
- the electron donor material is poly-3-hexylthiophene (P3HT), poly-3-poly-3-octylthiophene (poly-3-octylthiophene, P3OT), polyparaphenylenevinylene [poly-p-phenylenevinylene, PPV], poly (dioctylfluorene) [poly (9,9'-dioctylfluorene)], poly (2-methoxy, 5- (2-ethyl-hexyloxy) -1, 4-phenylenevinylene) [poly (2-methoxy, 5- (2-ethyle-hexyloxy) -1,4-phenylenevinylene, MEH-PPV] or poly (2-methyl, 5- (3 ', 7'- Dimethyloctyloxy))-1,4-phenylenevinylene [poly (2-methyl, 5- (3 ', 7'-
- the electron acceptor is a fullerene (C60, C70, C80) or a fullerene derivative PCBM ([6,6] -phenyl-C61 butyric acid methyl ester) (PCBM (C60), PCBM (C70), PCBM (C80) ), May be an organic material including carbon nanotubes or graphene, and may be an inorganic material including metal oxides such as ZnO, TiO 2 , SnO 2, and the like.
- the present invention is not limited thereto, and various materials capable of receiving electrons from the photoactivated electron donor material may be used.
- the nanostructure 410 may be further included in the photoactive layer 400.
- the nanostructure 410 may include metal nanoparticles, metal nanowires, CNTs, or graphene.
- the photoactive layer 400 may further include silver nanoparticles.
- the nanostructure 410 serves to efficiently form the conductive channel 700 between the second electrode 600 and the first electrode 300 of the neighboring solar cell.
- the conductive channel 700 may be formed between the opposite electrodes of neighboring solar cells by applying an electric field by connecting the opposite electrodes of each solar cell.
- the nanostructure 410 is further included in the photoactive layer 400 positioned between the opposite electrodes of the neighboring solar cell, thereby inducing the conductive channel 700 to be formed more efficiently.
- the nanostructure 410 may minimize the problem of device destruction that may occur when a strong electric field is applied to form the conductive channel 700.
- the second charge transport layer 500 is located on the photoactive layer 400.
- the second charge transport layer 500 may be entirely located on the photoactive layer 400. That is, unlike the related art, the second charge transport layer 500 does not require a pattern process for series connection between each solar cell.
- the second charge transport layer 500 captures electrons or holes separated from the photoactive layer 400 and transports them to the second electrode 600.
- the second charge transport layer 500 may be a hole transport layer or an electron transport layer.
- the same material as the hole transport layer or the electron transport layer of the first charge transport layer 300 may be used as the hole transport layer or the electron transport layer.
- the plurality of second electrodes 600 is positioned on the second charge transport layer 500. In this case, the plurality of second electrodes 600 may be spaced apart from the second charge transport layer 500.
- the first electrode 200a, 200b, 200c, the second electrode 600a, 600b, 600c and the first electrode 200a, 200b, 200c and the second electrode (600a, 600b, 600c) is located between A plurality of solar cells including the first charge transport layer 300, the photoactive layer 400, and the second charge transport layer 500 may be formed.
- the second electrode 600 may be located on the second charge transport layer 500 of the neighboring solar cell.
- part of the second electrode 600b may be located on the second charge transport layer 500 of the solar cell, and part of the second electrode 600b may be located on the second charge transport layer 500 of the neighboring solar cell.
- the overlapping portion of the second electrode 600 and the first electrode 200 of the neighboring solar cell is formed so that the second electrode 600 is electrically connected to the first electrode 200 of the neighboring solar cell.
- the conductive channel 700 may be formed between the second electrode 600 and the first electrode 200 of the neighboring solar cell.
- the second charge transport layer 500 when the second charge transport layer 500 is omitted, at least a portion of the second electrode 600 will be located on the photoactive layer 400 of the neighboring solar cell.
- the second electrode 600 may serve as a cathode or an anode according to the type of the second charge transport layer 500.
- the second electrode 600 serves as an anode for collecting holes generated in the photoactive layer, and the second charge transport layer 500 is an electron transport layer.
- the second electrode 600 may serve as a cathode for collecting electrons generated in the photoactive layer.
- the second electrode 600 may be any one metal electrode selected from Al, Au, Cu, Pt, Ag, W, Ni, Zn, or Ti and alloys thereof.
- conductive polymer materials such as polyacetylene, polyaniline, polythiophene, polypyrrole, or the like may be used.
- the first electrode 200 and the second electrode 600 described above may be used in reverse.
- a metal electrode may be disposed as the first electrode 200, and in this case, when a conductive film having transparency is disposed as the second electrode 600, the metal electrode may operate as a solar cell that receives light from the top.
- the conductive channel 700 is positioned between the second electrode 600 and the first electrode 200 of the neighboring solar cell. Thus, the conductive channel 700 electrically connects the second electrode 600 to the first electrode 200 of the neighboring solar cell.
- the conductive channel may be located in a layer between the second electrode 600 and the first electrode 200 of the neighboring solar cell.
- the conductive channel 700a may be located in a layer between the second electrode 600b and the first electrode 200a of the neighboring solar cell. That is, the conductive channel 700 may be formed through the layer between the second electrode 600 and the first electrode 600 of the neighboring solar cell.
- the first charge transport layer 300, the photoactive layer 400, and the second charge transport layer 500 are sequentially positioned between the second electrode 600 and the first electrode 200 of the neighboring solar cell.
- the conductive channel 700 may be located through the first charge transport layer 300, the photoactive layer 400, and the second charge transport layer 500.
- the present invention is not limited thereto, and the conductive channel 700 may be formed only in the photoactive layer 400.
- the conductive channel 700 may be located in the photoactive layer 400. Can be.
- FIG. 2 is a cross-sectional view showing a solar cell module according to another embodiment of the present invention.
- a solar cell module may include a stacked solar cell in which a substrate 100 and a plurality of photoactive layers 400 are stacked.
- the present invention is a structure in which the entire thin film is formed without patterning all the layers except the electrode, when the method is applied to the stacked solar cell, the module efficiency can be further maximized.
- 3 to 5 are cross-sectional views illustrating a method of manufacturing a solar cell module according to an embodiment of the present invention, according to process steps.
- a plurality of first electrodes 200 constituting each solar cell spaced apart from the substrate 100 are formed.
- the second electrode 600 may be formed using various methods such as thermal evaporation, sputtering, or printing using a metal ink or a conductive material.
- the ITO may be coated on the entire surface of the substrate 100 using a sputtering method, and may be etched at a predetermined interval to form a plurality of first electrodes 200.
- the first charge transport layer 300, the photoactive layer 400, and the second charge transport layer 500 are formed on the substrate 100 on which the plurality of first electrodes 200 are formed. In some cases, the first charge transport layer 300 or the second charge transport layer 500 may be omitted.
- the first charge transport layer 300 and the second charge transport layer 500 may be performed by appropriately selecting a solution process such as slot die printing, screen printing, inkjet printing, gravure printing, or offset printing as necessary. have.
- the photoactive layer 400 may be appropriately selected from the coating or printing process, such as slot die printing, screen printing, inkjet printing, gravure printing, offset printing, doctor blade coating, knife edge coating, dip coating, spray coating, etc. as necessary Can be carried out, and processes such as deposition can be carried out.
- coating or printing process such as slot die printing, screen printing, inkjet printing, gravure printing, offset printing, doctor blade coating, knife edge coating, dip coating, spray coating, etc. as necessary Can be carried out, and processes such as deposition can be carried out.
- the number of patterns can be reduced to minimize the inactive area required for the pattern.
- the photoactive layer 400 at this time may further include a nanostructure (410).
- the nanostructure 410 may include metal nanoparticles, metal nanowires, CNTs, or graphene.
- the photoactive layer 400 may further include silver nanoparticles.
- the formation of the conductive channel 700 can be induced more efficiently. Furthermore, it is possible to minimize the problem of device destruction that may occur when a strong electric field is applied to form the conductive channel 700.
- a plurality of second electrodes 600 spaced apart from each other on the photoactive layer 400 is formed to form a plurality of solar cells.
- the second electrode 600 may be formed using a variety of methods such as thermal evaporation, sputtering, or printing using a metal ink or a conductive material.
- a plurality of second electrodes 600 may be formed by thermally depositing and patterning Al on the photoactive layer 400 using a metal mask.
- At least a part of the second electrode 600 may be formed on the first electrode 200 of the neighboring solar cell.
- the second electrode 600b overlaps with the first electrode 200a of the neighboring solar cell.
- the conductive channel 700 is formed by applying an electric field to the first electrode 200 of the solar cell neighboring the second electrode 600.
- the conductive channel may be formed by applying a program voltage or a predetermined high voltage between the second electrode and the first electrode of the neighboring solar cell.
- conductive filaments are formed inside the organic material when a reverse voltage is applied to opposite electrodes between neighboring solar cells to exceed a predetermined voltage. This is similar in principle to electrical breakdown.
- the conductive filaments thus formed may be described as conductive channels.
- the conductive channel 700 may be formed in the charge transport layer 500.
- the electrical post-treatment may be used to perform a series connection between solar cells without patterning the first charge transport layer 300, the photoactive layer 400, and the second charge transport layer 500.
- the number of patterns can be reduced to minimize the area for series connection between solar cells, thereby minimizing the inactive area of the solar cell module.
- the efficiency of the solar cell module can be increased by increasing the geometric fill factor of the solar cell module.
- a solar cell module sample was prepared according to an embodiment of the present invention.
- the ITO electrode is applied to the entire surface by using a sputter on the glass substrate, and the pattern is etched at a predetermined interval to form three first electrodes spaced apart, and the PEDOT on the glass substrate on which the first electrode is located:
- the first charge transport layer was formed entirely on the PSS through spin coating.
- PC 70 BM which is a mixture of conjugated polymer as electron donor and PC 70 BM as electron acceptor, was spin coated on the first charge transport layer to form a photoactive layer on the entire surface.
- the aluminum electrode was patterned by vacuum thermal deposition using a metal mask on the photoactive layer to form three second electrodes spaced apart from each other to form three solar cells.
- the second electrode was disposed such that at least a part thereof was positioned on the photoactive layer of the neighboring solar cell.
- the first charge transport layer and the photoactive layer are positioned between the ITO electrode and the aluminum electrode in the connection region where the opposite electrodes between the solar cells overlap.
- a positive voltage is connected to the aluminum electrode of one solar cell and a negative voltage to the ITO electrode of the solar cell neighboring the one solar cell, and an electric field is applied to the aluminum electrode.
- a conductive channel was formed between the ITO electrodes.
- a conductive channel is formed by connecting an opposite electrode between neighboring solar cells to form a conductive channel to form a series connection between the solar cells.
- the current-voltage curve of the solar cell module manufactured by Preparation Example 1 was analyzed.
- an open voltage VOC is 1.9 V and a short circuit current density J sc is 2.7 mA / cm 2 .
- the fill factor (FF) is 0.37 and the light conversion efficiency (Efficiency) is 1.9%.
- V oc is 0.63 V in a single solar cell of the photoactive material, and 1.9 V comes out because three solar cells are connected in series. Therefore, it can be seen that the series connection between the solar cells is effectively made.
- a solar cell module sample was prepared according to an embodiment of the present invention.
- a small amount of silver nanoparticles was added to the photoactive layer, and the solar cell module was manufactured in the same manner as in Preparation Example 1 except that the TiO x layer was formed as the second charge transport layer on the photoactive layer.
- the current-voltage curve of the solar cell module manufactured by Preparation Example 2 was analyzed.
- Table 1 is a table analyzing the current-voltage curve of the solar cell module manufactured by Preparation Example 2.
- ⁇ A is the efficiency considering only the active area and ⁇ M is the efficiency of the solar cell module, which is a product of ⁇ A multiplied by the active area / total area. to be.
- the finally completed solar cell module exhibits a high light conversion efficiency of 5.57% by applying an electric field to form a conductive channel.
- the solar cell module according to the present invention does not require the patterning process of layers except for the electrode, the number of patterns is reduced to minimize the inactive area required for the pattern, thereby increasing the geometric fill factor.
- the solar cell module efficiency can be increased.
- substrate 200, 200a, 200b, 200c first electrode
- nanostructure 500 second charge transport layer
- 700, 700a, 700b, 700c conductive channel
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Abstract
Description
Voc(V) | Jsc(mA/cm2) | FF | ηA (%) | ηM (%) | |
전기장 인가 전 | 0.68 | 3.53 | 0.29 | 0.70 | 0.63 |
전기장 인가 후 | 2.07 | 4.82 | 0.62 | 6.19 | 5.57 |
Claims (14)
- 기판; 및상기 기판 상에 위치하되, 제1 전극, 제2 전극 및 상기 제1 전극과 상기 제2 전극 사이에 위치하는 광활성층을 포함하는 다수의 태양전지 셀을 포함하고,상기 제2 전극의 적어도 일부는 이웃하는 태양전지 셀의 광활성층 상에 위치하고,상기 제2 전극과 이웃하는 태양전지 셀의 제1 전극 사이에 전도성 채널이 위치하는 태양전지 모듈.
- 제1항에 있어서,상기 전도성 채널은 제2 전극과 이웃하는 태양전지 셀의 제1 전극 사이의 층 내에 위치하는 것을 특징으로 하는 태양전지 모듈.
- 제1항에 있어서,상기 전도성 채널은 제2 전극과 이웃하는 태양전지 셀의 제1 전극에 전기장을 인가하여 형성된 것을 특징으로 하는 태양전지 모듈.
- 제1항에 있어서,상기 광활성층은 상기 제1 전극이 위치하는 기판 상에 전면적으로 위치하는 것을 특징으로 하는 태양전지 모듈.
- 제1항에 있어서,상기 광활성층은 전자주게 물질과 전자받게 물질의 벌크 헤테로 접합(bulk hetero junctuin) 구조인 것을 특징으로 하는 태양전지 모듈.
- 제1항에 있어서,상기 광활성층 내에 나노 구조체를 더 포함하는 것을 특징으로 하는 태양전지 모듈.
- 제6항에 있어서,상기 나노 구조체는 금속 나노입자, 금속 나노와이어, CNT 또는 그래핀을 포함하는 태양전지 모듈.
- 제1항에 있어서, 상기 태양전지 셀은,상기 제1 전극 및 상기 광활성층 사이에 위치하는 제1 전하 수송층을 더 포함하는 것을 특징으로 하는 태양전지 모듈.
- 제1항에 있어서, 상기 태양전지 셀은,상기 광활성층 및 상기 제2 전극 사이에 위치하는 제2 전하 수송층을 더 포함하는 것을 특징으로 하는 태양전지 모듈.
- 제1항에 있어서,상기 태양전지 셀은 복수개의 광활성층이 적층된 적층형 태양전지 셀인 것을 특징으로 하는 태양전지 모듈.
- 기판 상에 이격 배치된 다수의 제1 전극을 형성하는 단계;상기 제1 전극이 형성된 기판 상에 전면적으로 광활성층을 형성하는 단계;상기 광활성층 상에 이격 배치된 다수의 제2 전극을 형성하여 다수의 태양전지 셀을 형성하되, 상기 제2 전극의 적어도 일부는 이웃하는 태양전지 셀의 광활성층 상에 위치하도록 형성하는 단계; 및상기 제2 전극과 이웃하는 태양전지 셀의 제1 전극에 전기장을 인가하여 전도성 채널을 형성하는 단계를 포함하는 태양전지 모듈 제조방법.
- 제11항에 있어서,상기 전도성 채널은 상기 제2 전극과 이웃하는 태양전지 셀의 제1 전극 사이의 층 내에 형성되는 것을 특징으로 하는 태양전지 모듈 제조방법.
- 제11항에 있어서,상기 광활성층은 나노 구조체를 더 포함하는 것을 특징으로 하는 태양전지 모듈 제조방법.
- 제13항에 있어서,상기 나노 구조체는 금속 나노입자, 금속 나노와이어, CNT 또는 그래핀을 포함하는 태양전지 모듈 제조방법.
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CN105164774B (zh) | 2017-12-05 |
US20160118522A1 (en) | 2016-04-28 |
KR101440607B1 (ko) | 2014-09-19 |
US10468546B2 (en) | 2019-11-05 |
CN105164774A (zh) | 2015-12-16 |
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